House Wren Hole

House Wren

House Wren

While at the Guano Creek Campground at Hart Mountain National Antelope Refuge (Oregon) Leonard and I saw a second nest in the aspen trees (See Northern Flicker Nest 06-20-2016 for the first). A house wren (Troglodytes aedon) was busily “feathering” her nest.

Living in the open forest, forest edges, areas with scattered trees and grass, farmyards and urban and suburban settings, house wrens build their nests in tree holes, nest boxes or any other enclosed area with an “entrance hole”. House wrens will fiercely compete for nest sites, even rolling eggs out of the nests of other bird species.

House wrens pile twigs into their chosen cavity. The nest itself is a soft, lined cup built into a depression in the twigs. House wrens will add spider egg sacs to the lining of their nests. As the spider eggs hatch, the young spiders eat mites and other nest parasites that infect the wren nest, resulting in healthier nestlings. Pretty smart!!

Three to ten white, pinkish or greyish eggs speckled with reddish brown are incubated for 9 to 16 days. The hatchlings remain in the nest 15 to 17 days before fledging. House wrens usually have two broods in a season. One year Leonard and I watched a pair of house wrens successfully raise three broods in a nest box on a friend’s porch.



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